How to draw right-to-left text in a PDF using C# and VB.NET?

using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;

Imports Syncfusion.Pdf
Imports Syncfusion.Pdf.Graphics

//Create a new PDF document
PdfDocument doc = new PdfDocument();
//Add a page to the document
PdfPage page = doc.Pages.Add();
//Create PDF graphics for the page
PdfGraphics graphics = page.Graphics;
//Create font
PdfFont font = new PdfTrueTypeFont(new Font("Arial", 14), true);
//Set the format for string
PdfStringFormat format = new PdfStringFormat();
//Set the property for RTL text
format.TextDirection = PdfTextDirection.RightToLeft;
//Set the alignment
format.Alignment = PdfTextAlignment.Right;
//Draw string with right alignment
graphics.DrawString("مرحبا بالعالم!", font, PdfBrushes.Black, new RectangleF(0, 0, page.GetClientSize().Width, page.GetClientSize().Height), format);
//Save the document
doc.Save("RTLText.pdf");
//Close the document
doc.Close(true);
//This will open the PDF file so, the result will be seen in default PDF viewer
Process.Start("RTLText.pdf");

'Create a new PDF document
Dim doc As New PdfDocument()
'Add a page to the document
Dim page As PdfPage = doc.Pages.Add()
'Create PDF graphics for the page
Dim graphics As PdfGraphics = page.Graphics
'Create font
Dim font As PdfFont = New PdfTrueTypeFont(New Font("Arial", 14), True)
'Set the format for string
Dim format As New PdfStringFormat()
'Set the property for RTL text
format.TextDirection = PdfTextDirection.RightToLeft
'Set the alignment
format.Alignment = PdfTextAlignment.Right
'Draw string with right alignment
graphics.DrawString("مرحبا بالعالم!", font, PdfBrushes.Black, New RectangleF(0, 0, page.GetClientSize().Width, page.GetClientSize().Height), format)
'Save the document
doc.Save("RTLText.pdf")
'Close the document
doc.Close(True)
'This will open the PDF file so, the result will be seen in default PDF viewer
Process.Start("RTLText.pdf")